Java Code Examples for jdk.nashorn.internal.ir.WhileNode#getBody()

The following examples show how to use jdk.nashorn.internal.ir.WhileNode#getBody() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: CodeGenerator.java    From nashorn with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    lineNumber(whileNode);

    final Expression test          = whileNode.getTest();
    final Block      body          = whileNode.getBody();
    final Label      breakLabel    = whileNode.getBreakLabel();
    final Label      continueLabel = whileNode.getContinueLabel();
    final Label      loopLabel     = new Label("loop");

    if (!whileNode.isDoWhile()) {
        method._goto(continueLabel);
    }

    method.label(loopLabel);
    body.accept(this);
    if (!whileNode.isTerminal()) {
        method.label(continueLabel);
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
        method.label(breakLabel);
    }

    return false;
}
Example 2
Source File: CodeGenerator.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    final Expression test          = whileNode.getTest();
    final Block      body          = whileNode.getBody();
    final Label      breakLabel    = whileNode.getBreakLabel();
    final Label      continueLabel = whileNode.getContinueLabel();
    final boolean    isDoWhile     = whileNode.isDoWhile();
    final Label      loopLabel     = new Label("loop");

    if (!isDoWhile) {
        method._goto(continueLabel);
    }

    method.label(loopLabel);
    body.accept(this);
    if (!whileNode.isTerminal()) {
        method.label(continueLabel);
        lineNumber(whileNode);
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
        method.label(breakLabel);
    }

    return false;
}
Example 3
Source File: CodeGenerator.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    final Expression test          = whileNode.getTest();
    final Block      body          = whileNode.getBody();
    final Label      breakLabel    = whileNode.getBreakLabel();
    final Label      continueLabel = whileNode.getContinueLabel();
    final boolean    isDoWhile     = whileNode.isDoWhile();
    final Label      loopLabel     = new Label("loop");

    if (!isDoWhile) {
        method._goto(continueLabel);
    }

    method.label(loopLabel);
    body.accept(this);
    if (!whileNode.isTerminal()) {
        method.label(continueLabel);
        lineNumber(whileNode);
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
        method.label(breakLabel);
    }

    return false;
}
Example 4
Source File: Lower.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 5
Source File: Lower.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Node test  = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (conservativeAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), null, null, body, null, ForNode.IS_FOR).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 6
Source File: LocalVariableTypesCalculator.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}
Example 7
Source File: Lower.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 8
Source File: Lower.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Node test  = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (conservativeAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), null, null, body, null, ForNode.IS_FOR).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 9
Source File: Lower.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Node test  = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (conservativeAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), null, null, body, null, ForNode.IS_FOR).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 10
Source File: LocalVariableTypesCalculator.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}
Example 11
Source File: Lower.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 12
Source File: LocalVariableTypesCalculator.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}
Example 13
Source File: Lower.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 14
Source File: LocalVariableTypesCalculator.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}
Example 15
Source File: Lower.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 16
Source File: LocalVariableTypesCalculator.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}
Example 17
Source File: Lower.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 18
Source File: LocalVariableTypesCalculator.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}
Example 19
Source File: Lower.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example 20
Source File: LocalVariableTypesCalculator.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}